Rain Induced Cross Polarization on Satellite Communication in Nigeria

Authors

  • P. A. Akanbi Department of Physics, College of Science and Technology Covenant University, PMB 1023, Ota, Ogun state
  • T. V. Omotosho Department of Physics, College of Science and Technology Covenant University, PMB 1023, Ota, Ogun state
  • S. Akinwumi Department of Physics, College of Science and Technology Covenant University, PMB 1023, Ota, Ogun state

DOI:

https://doi.org/10.26713/jims.v9i2.739

Keywords:

Cross-polarization discrimination, Satellite communication, Frequency, Rainfall rate

Abstract

Microwave systems performance on satellite communication link operating above 10 GHz is increasingly degraded by rain when designing telecommunication systems. Cross polarization is one of the major source of signal degradation that affectthe frequency reuse when employed to boost capacity of the channel. The effect of cross-polarization in thirty-seven (37) stations in Nigeria were carried out using 10 years data obtained from Nigeria Meteorological Agency (NIMET) at the look angle from Nigeria Communication Satellite (NigComSat). International Telecommunication Union-Recommendation (ITU-R) model was used to for this study. The stations were grouped into six geopolitical zones in Nigeria which are Southwest (SW), Southeast (SE), South-south (SS), Northcentral (NC), Northwest (NW) and Northeast (NE). The results reveal that cross-polarization discrimination (XPD) become very poor as frequency (at Ku-band, Ka-band, V-band) increases especially at lower percentage of time (such as 0.001%, and 0.01%) unavailability. Hence XPD, at all frequencies is poorer in the southern part of Nigeria SE, SS and SW due to high rainfall rate. The results also show that only Northern part of the country will experience no interference at 0.01% as XPD is over 30 dB ITU-R base line for Ku-band transmission. However, for Ka-band and V-band at 0.001% and 0.01% unavailability of time interference will occur in all stations in Nigeria, but at 0.1% and 1% XPD is over 30 dB for all stations. This study will help in the adequate planning and designing of satellite telecommunication expansion in all the six geopolitical zones in Nigeria.

Downloads

Download data is not yet available.

References

A. Ajayi and Kolawole complete the name of author(s), Variation in raindrop size distribution and specific attenuation due to rain in Nigeria, Ann Telecoms. 51 (1-2) (1996), 87 – 93.

G. Brussaard, A metereological model for rain induced cross-polarization, IEEE Transection on Antenna Propagation Ap-24 (1976), 5 – 11.

M. Camara, S.O. Bashir and F.N.M. Isa, Prediction of rain induced cross-polarization at microwave and millimeter wave bands in Guinea, 2014 International Conference on Computer and Communication Engineering (ICCCE), (2015), 1 – 25 doi:10.1109/ICCCE.2014.58.

David A. de Wolf , Based on the Law-Parrsons raindrop size distribution, Radio Science 36 (4) (July/August 2001), 639 – 642.

European Space Agency (ESA), Evaluating Cloud Microphysics from NICAM against CloudSAT and CALIPSO (2013).

International Telecommunication Union-Recommendation (ITU-R), Propagation data and prediction methods required for the design of earth-space telecommunication systems, International Telecommunication Union P612-8 (2015), 25 – 27.

J. Sen, Estimation of cross-polarization due to rain over some station in India, Indian Journal of Radio and Space Physics 36 (7) (2007), 276 – 287.

T.V. Omotosho, Theoretical study on rain induced cross polarization and rain rate in tropical region, Federal University of Technology, FUTA Akure., M. Tech. Thesis (2003).

M. Saunders, Cross polarization due to rain at 18 GHz and 30 GHz, Trans Antenna propagation, IEEE Trans. Antenna Propagation AP-19 (1971), 273 – 277.

Tan and Thurai, Calculation of XPD spread for 20 GHz fixed satellite system using rain microstructure information, Indian Journal of Space Physics 12 (2009), 276 – 287.

M. Van de Kamp, Depolarization due to rain: XPD-CPA relation, International Journal on Satellite Communication 9 (1999), 285 – 301.

Downloads

CITATION

How to Cite

Akanbi, P. A., Omotosho, T. V., & Akinwumi, S. (2017). Rain Induced Cross Polarization on Satellite Communication in Nigeria. Journal of Informatics and Mathematical Sciences, 9(2), 375–385. https://doi.org/10.26713/jims.v9i2.739

Issue

Vol. 9 No. 2 (2017)

Section

Research Articles

License

Authors who publish with this journal agree to the following terms:
  • Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a CCAL that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.
  • Authors are able to enter into separate, additional contractual arrangements for the non-exclusive distribution of the journal's published version of the work (e.g., post it to an institutional repository or publish it in a book), with an acknowledgement of its initial publication in this journal.
  • Authors are permitted and encouraged to post their work online (e.g., in institutional repositories or on their website) prior to and during the submission process, as it can lead to productive exchanges, as well as earlier and greater citation of published work.